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Tytthoscincus panchorensis GRISMER, MUIN, WOOD, ANUAR & LINKEM, 2016

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Higher TaxaScincidae, Sphenomorphinae (Sphenomorphini), Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Bukit Panchor Forest Skink 
SynonymTytthoscincus panchorensis GRISMER, MUIN, WOOD, ANUAR & LINKEM 2016 
DistributionPeninsular Malaysia (Pulau Pinang)

Type locality: Bukit Panchor, State Park, Pulau Pinang, Peninsular Malaysia (N 05°09'13.6", E 100°32'46.6"; 79 m elev.)  
TypesHolotype: LSUHC 12511, Adult male, collected by M. A. Muin on 6 January 2013 from a pitfall trap. 
DiagnosisDiagnosis: Tytthoscincus panchorensis sp. nov. can be differentiated from all other species of Tytthoscincus by having 29 midbody scale rows; 68 paravertebrals; 57 ventrals; four supraoculars; parietals and supraoculars in contact; one medially projecting superciliary scale; two loreals; six supralabials; five infralabials; bicarinate subdigital lamellae; eight lamellae beneath Toe IV; a dark, diffuse, dorsolateral stripe extending from the eye to the shoulder; and no light-colored dorsolateral stripe (Table 2 in Grismer et al. 2016).

Comparisons: Tytthoscincus panchorensis sp. nov. can be differentiated from all other species of Tytthoscincus or suspected Tytthoscincus by lacking (vs. having) the prefrontals in contact medially, having a single (vs two) loreal scales, and having fewer subdigital lamellae on Toe IV (eight vs 9–15, collectively; Table 2). Additionally, T. panchorensis sp. nov. has fewer midbody scale rows (29 vs 30–44 collectively) than all other species except for T. sibuensis and it has more supraoculars (five vs four) than all other species except T. textum. Tytthoscincus panchorensis sp. nov. is most similar to its closest relative T. sibuensis but can be further distinguished from it by having fewer (one vs. two) posteriorly projecting supraciliaries, a greater number of paravertebral scales (68 vs. 58), a greater number of ventral scales (57 vs. 52), fewer Toe IV subdigital lamellae (eight vs. 9–11), by the presence (vs. absence) of a dark, dorsolateral stripe, and the absence (vs. presence) of a light, dorsolateral stripe and light and dark lineate mottling on the throat and neck (Table 2 in Grismer et al. 2016). 
CommentAbundance: only known from the type specimen (Meiri et al. 2017). 
EtymologyThe specific epithet panchorensis is in reference to the type locality of the Bukit Panchor State Park, Pulau Pinang, Peninsular Malaysia. The suffix -ensis is from the Latin word for “from, of” or “from a place” and renders the specific epithet an adjective. 
  • GRISMER, L. LEE; & EVAN S. H. QUAH 2019. An updated and annotated checklist of the lizards of Peninsular Malaysia, Singapore, and their adjacent archipelagos. Zootaxa 4545 (2): 230–248 - get paper here
  • GRISMER, L. LEE; MOHD ABDUL MUIN, PERRY L. WOOD, JR., SHAHRUL ANUAR, & CHARLES W. LINKEM 2016. The transfer of two clades of Malaysian Sphenomorphus Fitzinger (Squamata: Scincidae) into the genus Tytthoscincus Linkem, Diesmos, & Brown and the description of a new Malaysian swamp-dwelling species. Zootaxa 4092 (2): 231–242 - get paper here
  • Grismer, L.Lee; Perry L. Wood, Jr., Kelvin K. P. Lim & Lim J. Liang 2017. A new species of swamp-dwelling skink (Tytthoscincus) from Singapore and Peninsular Malaysia. RAFFLES BULLETIN OF ZOOLOGY 65: 574–584 - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
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